Pounding machine



March 15, 1932. w. T. MINETT 1,849,241

POUNDING MACH INE Filed April 14, 1930 WVEA/UP Patented Mar. 15, 1932 UNITED STATES PATENT OFFICE WILFRID '1. MINETT, OF LEICESTER, ENGLAND, ASSIGNOR '10 UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY POUNDING MACHINE Application filed April 14, 1930, Serial No. 444,170, and in Great Britain April 22, 1929.

This invention relates to pounding machines and is herein illustrated as embodied in a shoe-pounding machine of-the type disclosed in United States Letters Patent No. 1,030,837, granted June 25, 1912, upon an application filed in the name of Orrell Ashton.

Machines of this type commonly comprise a drum having a plurality of beating members arranged for operation upon bottoms of lasted shoes and also a rapidly reciprocable hammer for operating upon the uppers of such shoesin preparing the shoes for the solelaying operation.

An object of the present invention is to provide a pounding machine having a worksupporting device constructed and arranged for presenting shoes to pounding tools for operation upon the bottoms and uppers of 'the shoes without subjecting the operator to any considerable extent to vibration cause by the pounding tools.

To this end,'as illustrated, a machine of the type referred to is provided with a lever pivotally mounted upon the frame of the machine and carrying a last pin adapted to be inserted in the last of a shoe to be operated upon, there bein treadle-operated mechanism' for moving tie last pin toward the tools so that the work will be forced into engagement therewith. Preferably the treadle-operated mechanism is arranged to force the last pin and the work engaged thereby into the angle formed between the faces of the pounding tools to present both the upper and the bottom of the shoe to the tools in operating upon the heel or toe portions thereof in preparing the shoe for the sole-laying operation. Preferably, too, the last pin is substantially universally mounted so that a shoe engaged thereby can be presented at any desired angle relatively to the operative faces of the tools.

.In the use of the construction above set forth, the work is forced against the tools by the treadle-operated mechanism and the vibrations of the tools are largely absorbed by the operating parts of the machine, thus relieving theoperator from considerablestrain Fig. 2 is a detail of the lever and lever-- retaining device.

The drawings illustrate a shoe-pounding machine comprising a frame or head having mounted therein a shaft 12 which is rotated at a high rate of speed and which has mounted upon it a beating drum or wheel 14 havmg a plurality of rows of beating rings 16, the rows being arranged round the circumference of the drum and parallel with the axis of the shaft 12. The rings are loosely mounted upon supports 17 and are adapted to be flung outwardly by centrifugal force as the drum 14 rotates, thus affording yielding beating surfaces. Near the to of the beating drum 14 there is carried by tiie frame a vibratory hammer 18 the operative face of which extends substantially at right angles to the working surface of the drum 14. The frame also carries a lower work rest 20 and an upper work rest 22. "For a further de' scription of the construction and operation of the parts thus far described, reference may be had to theaforementioned Letters Patent.

Pivotally secured upon the rearward portion of the frame 10 is a pair of brackets, one of which is shown at 24, in bearings in which is carried a spindle 26. To one end of the spindle 26 is fixed a rearwardly extending arm 28 to which is pivoted a two-part treadle rod 30, 32, the parts of which are connected together by a bracket 34 and a spring 36 and the lower end of which is connected to a treadle (not shown). Near the other end of the spindle 26 there is fixed an upwardly extending arm 38 carrying between the arms of a fork at its upper end a pivot pin 40 upon which is pivoted a bent lever 42, the arrangement being such that the pivotedend of the bent lever 42 can move longitudinally of its pivot pin 40 between the arms of the fork, and, by reason of a hole 44 through which the pin 40 passes being considerably larger than the pin, can rock, laterally of the plane of the bent lever, upon the pin 40. Secured to the upper part of the rearward portion of the frameis an upwardly and rearwardly extending rod 46 to the upper end of which (not shown) is fixed one end of a light tension spring 48the other end of'which is fixed to the rear-"part of the bent lever 42-, with the result that the lever 42 is normally forced rearwardly about its pivot by the spring'48 so that its forward end is held upwardlyand rearwardly into what may be termed an inoperative position in which it does not infreedom ofbodily movement and of swingng movement 1n. any of three mutually perpendicular planes. I The last pin is pivotally connected tothe lever 42 by a horizon tal pivot pin 56 and clamp 58' so that it can be adjusted and set relatively to the end of lever 42 according to the particular style of last. with which it is to be used. 7

Mounted upon the top of the frame 10 is an upwardly extending yoke (Fig. 2) which-embraces the bent lever 42, the upper part of the yoke being sliaped in the form .Ofan inverted V and being so-positioned and arranged that when the bent lever 42 is pulled into inoperative position by its spring 48: theyoke 60 will centralize it and will limit its upward and rearward. movement.

Inthe operation of the machine, theoperator. grasps the shoe to be operated upon and applies the shoe bottom to the beating rings 16 of the rotary drum 14, resting the shoe upon its side" upon the work rest 20 and operating in this way upon the forepart,:waist and. heel. seat to conformthe insoleand surplus upper material to the last. After having completed this part of the operation the operator may use the reciprocating blocking hammer 18'upon the toe end of the shoe,'r.esting the shoe bottom. upon the work rest 22with the toe end of theshoedi rected' towards the reciprocating hammer l8 and. pressing. lightly downward upon the rings 16 and rearwardly against the hammer 18. The purposeof this operation is to.c0n.- form. the toe portion ofthe upper to the last and isaccompli'shed by the combined operation of the hammer and drum actingyupon the, edge portions of the upper. A. light pressure, of the. shoe. against the tools will usually be sufficient for this purpose. It is to be observed that during both these operations the bent lever 42 is in its rearward inoperative position so that its front end and the last pin 50 are held rearwardly and up- Wardly into such. a position that.v they do not interfere with the positioning of; the work in the necessary manner or with the observation of the work while being operated upon.

Having" completed these parts of the operation. the operator then proceeds with the final shaping of the heel parts of the upper-to'the last which, in View of the stiffness of the counter, frequently requires that considerable pressure be used "in pressing the shoe against. the operating tools. ,Accordingly, the operator places thelastu-pon the last pin; 50, the lower end of the. lastpin contacting with. the bottom, of. last-pin hole .52 in the last 54'. He then draws down the front end of thebent lever 42 against the action of the spring 48 until the shoe bottom rests upon the work rest 22. with itsrear' end againstthe blocking hammer 1-8- approximately as indicated in Fig. '11 Then, holdingthe shoe down uponthe beating-rings; 16 by a light pressure on one hand: upon the lever 42, he depresses the-treadle of the machine which pulls down theyielding treadle rod 50,.32and rocks the arm 38 ina counterclockwise direction about, its pivot 26 with the result that the. pivot pin.,40. is moved rearwardly, and, accordingly, thezfree 'end of thebent lever 42 is forced rearwardly and downwardly and the last: pin 50 forces the heel end of the shoe yieldinglyagainst the blocking hammer 18 and against the rings 16. lhereafter,.as the blocking hammer 18 reciprocates and the drum- 14. rotates, he moves the shoe about the last pin. 50v by means of his other hand which. lightly grasps thetoeof the shoe. It will be seen that the operator has merely to press lightly downwardly upon the front: end of the bent lever 42. with one hand..( and'-even1 this may indeednot" be necessary) and-,,with the-other hand lightly gripping the toe end: of the shoe, turn the shoe. Thus, with. this construction vibration of the tools and especially of the, reciprocating hammer will. be absorbed principally by the machine: parts and will not be transmitted to any great extent to the operator. I

It will be observed that. the lower-end of the lastpin 50'andt'he pivot pin 40 ofth'ebent lever-42 when the latter-is inoperative position, are very nearly in a horizontal line and are below the level of the top. of the-beating drum 14. The pivot pin 40'is at a slightly lower level: than the lower. end" ofthe last pin 50. WVith" this arrangementdepre'ssion of the treadle acts yieldingly: -'through: the spring 36; topress; the work; backiwandly to wardsthe' blocking hammer- 18 and down:- war-dly. ontov the beating rings-.Ifi-witlrthere sult that the work is pulled yieldingly against the outward thrusts of the beating devices into the apex of the angle formed by the face of the hammer and the part of the drum exposed above the rest 22 instead of, as has here tofore been the case, having to be pushed at all times by the operator into that angle against the said thrusts. His duty, is, therefore, practically confined to that of steering the work so that the desired parts will in turn be brought into proper relation relatively to the tools, and it is to be observed that, owing to the slackness of the last pin 50 in the last-pin hole 52 of the last 54 and owing to the slackness of the connection between the rear end of the bent lever 42 and the fork of the arm 38, the shoe, although held mechanically towards the tools by a strong pressure, at all times is substantially universally movable to present to the tools those parts of the heel end of the shoe that it is desired shall be acted upon by the tools. It is further to be observed that this result is attained by means of a construction that is very simple and cheap, is easily attached to existing 7 machines, and does not in any way interfere with the use in a usual manner of the machine.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is 2- l. A shoe-pounding machine comprising a frame, a pounding tool mounted in the frame, a work support comprising a lever pivotally mounted upon the frame and having a free end which extends into proximity to the pounding tool, a work-engaging member carried by the free end of the lever, means normally operative to urge the work-engaging member away from the pounding tool, and means for forcing the work-engaging member in a direction to present work engaged thereby to the pounding tool.

2. A shoe-pounding machine comprising a frame, a pounding tool mounted in the frame, a work support pivotally mounted upon the frame and having a free end extending above and in proximity to the pounding tool, a member positioned upon the free end of the support for engaging the last of a shoe to be operated upon and mounted for substantially universal movement relatively to the tool in presenting the shoe thereto, and means for forcing the member and work engaged thereby toward the tool.

3. A shoe-pounding machine comprising a frame, a pounding tool mounted in the frame, a work support comprising a lever pivotally mounted upon the rearward portion of the frame and having a forwardly extending free end located above and in proximity to the tool, a last pin carried by the free end ofthe lever and adapted to engage the last of a shoe to be operated upon, and means for forcing the last pin and a lasted shoe engaged thereby toward the tool. I a

4. In a machine for operating upon lasted shoes, a frame, a pounding tool, a shoe support comprising a lever pivoted to the frame and having a last pin adapted for insertion in the last-pin hole of the last of a shoe to be operated upon, means for urging the lever in a. direction to move the last pin away from the tool, and treadle-operated means for forcing the last pin and the lasted shoe engaged thereby toward the pounding tool.

5. In a machine for operating upon lasted shoes, a frame, a pounding tool mounted in the frame, a lever pivoted on the rearward portion of the frame and extending above and forwardly of the pounding tool, a last pin carried by one end of the lever and adapted for insertion in the last-pin hole of a lasted shoe to be operated upon, a spring normally operative to urge the last pin upwardly and rearwardly of the tool, and manually operable mechanism for urging the last pin and the work carried thereby toward the pounding tool.

6. In a pounding machine, a frame, a pounding tool carried by the frame, a work support comprising a lever pivotally mounted on the rearward portion of the frame and extending forwardly of the frame, a last pin carried by the lever and adapted for engagement in the last-pin hole of a lasted shoe to be operated upon, manually operable mechanism for moving the forward end of the lever in a direction toward the pounding tool thereby to force the lasted shoe carried by the last pin into engagement with the pounding tool, and a spring normally operative to urge the lever and last pin upwardly and rearwardly of the pounding tool.

7 A shoe-pounding machine comprising a frame, a beating drum, a vibratory hammer adjacent the drum, a work support pivotally mounted upon the frame and having a workengaging portion, and means for forcing the work-engaging portion in a direction to presentwork engaged thereby to the drum and hammer.

8. A shoe-pounding machine comprising a frame, a beating drum, a vibratory hammer having a striking surface positioned adjacent to the drum, a work support pivotally mounted upon the frame, and treadle-operated mechanism for advancing the work support in a direction such that work carried by the support will be forced into the angle between the drum and the striking face of the hammer.

9. A shoe-pounding machine comprising, a frame, abeating drum carried by the frame,

a blocking hammer carried by the frame near the free end portion of the lever and normally extending below the level of the; top of the drum, and means for. operating the lever to fence the; last pin in adirect-iontoward the apex. of the angle formed; between the drum andhammer:

In testimony whereof I have signed my name: to; this specification.

WILFRID THOMAS, MINETT. 

